Island



(No Model.)

. J. MQGAHEY. GUIDE FOR MAGHINES FOR COVERING WIRE. No. 439,675.. Patented Nov. 4, 1890.

F 1'57. 4. Fig. 2

WITNESSES: INVENTOH MPW' BY WWW) Q UNITED STATES PATENT ()FFICE.

JOI-IN MOOAHEY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE NEW ENGLAND BUTT COMPANY.

GUIDE FOR MACHINES FOR C OVERING WIRE.

SPECIFICATION forming part of Letters Patent No. 439,675, dated. November 4, 1890.

Application filed May '7, 1890. Serial No. 850,884. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN MOOAHEY, of Providence, in the county of Providence and State of Rhode Island, have invented certain 5 new and useful Improvements in Guides for Machines for Covering Wire; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and

S to the letters of reference marked thereon,

which form a part of this specification.

This invention relates to guides for winding-machines used for covering wire for electrical and other purposes, and is an improve- I ment on the invention described in my application, Serial No. 347,950. It is illustrated in the accompanying drawings, of which- Figure 1 shows an elevation of the winding part proper of the machine described in the application above referred to. Fig. 2 is a front elevation, on an enlarged scale, of the Wire guide and supporter on the end of the flier. Fig. 3 is atop view of the guide shown in Fig. 2. Fig. 4. shows a horizontal section of the guide, taken on line 0min Figs. 1 and 2.

The part of the winder shown in the drawings consists of a plate or carrier e, revolving around a stationary tube a, made fast in the frame below. The plate or carrier 6 carries 0 the spool d, holding the covering material, the flier-arm j, and stud m. The wire .2 to be covered is drawn through the tube a from a reel placed in the machine below. The flier j is not made fast in the plate e, but left free to be turned away from over the spool (Z when it is necessary to put on a full spool. spring 0 on the flier has one end attached to the flier and the other rests against the pin m, so as to hold the arm over the spool while 0 in operation, the pin n on the flier constituting a stop, which contacts with pin m to arrest the flier after it has been turned to proper position by the spring.

.This invention is an improvement on that part of the machine described in the applica tion before referred to which provides for guiding and supporting the wire while it is having the thread wound upon it, and is mainly confined to the construction of the guide at the end of the flier where the thread is applied to the wire.

The-

In covering very fine wire it has heretofore proved to be very difficult to hold the wire straight against the strain of the threads, Where, as in central-spool winding, this strain can only be applied on one side of the wire, and it is necessary to draw the thread very tightly around the wire to insure the threads spreading out evenly and not riding one on another, and where the covering is limited to a very thin layer, as in wire for covering armatures for dynamos, &c., whereon a wire of No. 30 only .250 of an inch are allowed for the increase in the diameter in a covering of silk thread. The wire, being very fine, is not strong enough to bear sufficient tension to hold it straight against the strain of the thread, and

if the wire is allowed to sag or bend the tendency will be for the thread to wind in the hollow and not evenly on the wire. This dif- 7c ficulty I obviate by forming a vertical V- shaped trough on the end of the flier-arm directly over the opening in the hollow spindle, through which the wire is drawn, so that the wire while being wound will lie in the bottom of this V-shaped guide, (see Fig. 3,) and a notch a is cut in one side of the guide, not quite down to the bottom of the groove, but

so as to leave enough of that side of the groove to about come up to the outer side of the wire. (See Fig. 4:.) This notch aisto allow the thread 0) to come to the wire, and it will be readily seen that the wire z has asupport all along its sides and back sufficient to prevent the thread o from drawing it out of a straight line by any tension that the thread will bear without breaking.

The thread for the purpose of making as thin a covering as possible is made up of several strands too fine and weak to bear winding separately, but which are spread out without twist side by side on the wire, and this spreading of the strands is accomplished by passing them over the edge of the side of the groove that is left in the notch a, as before men- 9 5 tioned, and shown in Fig. 4. By this arrangementany size of wire, however fine,ora thread, can be successfully and rapidly covered with a close even covering, if desired, which is of great importance in view of the continued in- T00 crease of the use of electricity in the arts.

The parts of the complete machine other to or trough, the sides whereof sustain the Wire against lateral flexure resulting from the strain of the covering material, and the said guide being imperforate at that point Where the winding takes place, substantially as described.

JOIIN MCGAHEY.

Witnesses:

JOSEPH F. BLAUVELT, HERBERT N. FENNER. 

